Elevator-lock.



A. E. CLARKE.

ELEVATOR LOCK.

APPLlCATiON FILED NOV. 21, 1917.

1,Q68,094.. Patented June 4, 1918.

3 noautoz ALGEBNON E. CLARKE, 0F GRAND RAPIDS, MICHIGAN.

ELEVATOR-LOCK.

Specification of Letters Patent.

Patented June 4: 1918.

Application filed November 27, 1917. Serial No. 204,289.

To all whom it may concern:

Be it known that I, AL'GnnNoN E. CLARKE, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Elevator- Loeks, of which the following is a specification.

My invention relates to improvements in looking appliances for use upon freight and passenger elevators in hotels, ware-rooms, &c., and its object is to provide a means wherloy an elevator may be securely locked between floors, or in any desired position in its shaft.

I attain this object by the mechanism disclosed in the accompanying drawing, in which Figure 1 is an end view of the locking case with the locking lever removed. Fig. 2 is a transverse vertical section of the looking case with the locking lever in place. Fig. 3 is a plan of the lock complete. Fig. 4 is an elevation of thesame showing the elevator cable in place passing through the locking case, and Fig. 5 is an end View, and a side view of the locking clamp or block detached from the locking case.

Similar reference numerals indicate similar parts throughout the several views shown in the drawings.

This lock is made up with a case cap 1, a case base 2 to which the cap is securely at tached, the two arranged to form a longitudinal opening 12 for the free passage of the cable 17, which is the usual actuating or control cable connected with all freight elevators. 5 represents the bolts by means of which the cap 1 is secured to the base 2, as hereinbefore intimated.

13 represents one edge of the elevator frame or carriage to which the ordinary lock holding arm 1 115 is attached, and my lock base 2 is, or may be secured to the arm 15 by means of bolts 16, or by any other available means, as indicated in Fig. 3.

The standard or fulcrum lug 3 is made integral with the cap 1, and is so fitted up that the locking lever 6 may be pivotally mounted therein, as at 8, to be readily moved from the position indicated by the solid lines, to that indicated by the dotted lines, in Fig. 2. The arm 7 is made integral with the lever 6 and acts. as a cam or eccentric upon the locking clamp or block 9. The block 9 has an opening through it, as at 10, for the free passage of the end of the arm 7 and is fitted to slide freely in the lug 3 and through the cap 1 to be made to press heavily against the side of the cable 17 when the lever 6 is carried upward into the position indicated by its dotted lines, as indicated by the dotted outlines of the block in Figs. 2 and 3, which holds the cable so firmly that it will be impossible to move this cable to throw the elevator machinery into action to raise or lower the elevator. The lug 3 is provided with an opening 4 for the free passage of the lever 6, and an opening 11 for the free passage of the arm 7.

It will be readily understood, from the description so far given, that when the lever 6 is in the position indicated by its solid lines the cable 17 will be wholly released so the elevator may be moved upward or downward, at pleasure with the lock base sliding freely over the cable, but when the lever 6 is carried upward into the position indicated by its dotted lines in Fig. 1 the gradual variance in the length of the radii from the center 8 to the points a-b will force the end of the block 9 so firmly against the side of the cable 17 as to render it impossible to move said cable either upward or downward, hence the elevator is firmly locked in position.

One great advantage gained by this manner of locking the elevator in any desired position in the shaft is the ability to lock the elevator safely in position between floors so that long articles, as lumber, 850., may be loaded onto, or unloaded from the elevator at any desired floor, which could not be done if the elevator must be stoppedimmediately upon the plane of the desired floor from which such articles are to be taken, or upon which they are to be left, and this too, with out danger of the elevator creeping during the process of loading or unloading such articles.

What I claim as new, and desire to secure by Letters Patent of the United States, is:

1. In an elevator lock, a base secured to the elevator a ca secured to said base and 7 forming therewith an opening for the free passage of the control cable of the elevator, a supporting standard integral with said cap, a lever pivotally mounted in said standard, an eccentrieally mounted arm integral with said lever, and a clamping block having a mortise through it adapted to be actuated by said arm to firmly clamp the control cable of the elevator to release the same when desired.

ally mounted in the lock base, an eccentrically formed arm integral with said lever and adapted to pass through the mortise in the clamping block to draw the block away from, and force it against the cable. 1.0

Signed at Grand Rapids, Michigan, November 23, 1917.

ALGEBNON E. CLARKE. H

Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Iatents i Washington, D. G. 

